-86.27% is the change from 517 to 71
Calculation steps:
[( 71 - 517 ) ÷ 517] x 100 = -86.27%
Formula
Percentage change = [(71 - 517) / 517] x 100
Subtract the new number by the original number
71 - 517 = -446
-446 ÷ 517 = -0.8626692456479691
-0.8626692456479691 x 100 = -86.27%